High Quality Content by WIKIPEDIA articles! The Middle Bengali Literature is a period in the History of Bengali literature dated from fifteenth to eighteenth century. Followed by the Turkish Invasion in Bengal in the thirteenth century, literature in vernacular Bengali took its first shape in this time. The oldest example of Middle Bengali Literature is believed to be Shreekrishna Kirtana by Boru Chandidas. The Middle Bengali Literature is divided into three periods named Pre-Chaitanya Era, Chaitnya Era and Later Middle Age.